How to change the coordinate values of a graph in Matlab?

1 year ago
Jackson Davis
2 minutes

In MATLAB, the set function can be used to modify the coordinates of a graph. Here are some common methods:

  1. Change the x-axis values: Use set(gca,’XTick’, xticks), where gca represents the current axis and xticks is a vector containing the new x-axis tick values.
  2. Change the y-axis values by using set(gca,’YTick’, yticks), where gca represents the current axis and yticks is a vector containing the new y-axis tick values.
  3. Change the x-axis labels by using set(gca,’XTickLabel’, xticklabels), where gca represents the current axis and xticklabels is an array of cells containing the new x-axis labels.
  4. To change the y-axis labels, use set(gca,’YTickLabel’, yticklabels), where gca represents the current axis and yticklabels is an array of new y-axis labels.
  5. Adjust the axis range: Use xlim([xmin, xmax]) to set the range of the x-axis, and ylim([ymin, ymax]) to set the range of the y-axis.

Here is an example code demonstrating how to modify the coordinate values of a graph.

% 生成数据
x = 1:10;
y = x.^2;

% 绘制图形
plot(x, y)

% 修改x轴坐标值
xticks = [1, 2, 4, 6, 8, 10];
set(gca,'XTick', xticks)

% 修改y轴坐标值
yticks = [0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100];
set(gca,'YTick', yticks)

% 修改x轴标签
xticklabels = {'A', 'B', 'C', 'D', 'E', 'F'};
set(gca,'XTickLabel', xticklabels)

% 修改y轴标签
yticklabels = {'0', '10', '20', '30', '40', '50', '60', '70', '80', '90', '100'};
set(gca,'YTickLabel', yticklabels)

After running the above code, you will see that the coordinates of the graph’s axis have been changed to custom values.

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